ST. PETERSBURG, Russia -- Russian police have arrested four gay rights activists protesting in St. Petersburg on the opening day of the 2014 Sochi Winter Olympics.

During Friday's protest, four gay activists unfurled a banner quoting the Olympic Charter's ban on any form of discrimination. The protesters, who gathered on St. Petersburg's Vasilyevsky Island, were quickly rounded up by police, according to Natalia Tsymbalova, a local lesbian, gay, bisexual and transgender activist.

The gay rights group All Out told CBS News in an emailed statement that one of the protesters arrested was associated with the organization.

“We just learned that 4 gay rights activists were arrested in St. Petersburg - including All Out's long-term contact and friend Anastasia Smirnova - for taking photos with a banner referring to Principle 6 of the Olympic Charter ‘Discrimination is incompatible with the Olympic Movement.’

In a message posted to her Facebook account after the arrest, Smirnova, a member of the Russian LGBT Network, thanked her supporters and added: "Can't write much as phones are not permitted, and they are now calling us to sign papers. Cosmic hugs to you from our police station! PS. Detention for a photo with a banner - isn't it an amazing way to celebrate the Opening of the Games?"

Online Public Information File

Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or fccinfo@fcc.gov.